Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2018-10-20 08:25:10 +00:00
parent e19d552987
commit b084638f15
28489 changed files with 184 additions and 3866856 deletions

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if not 'NVPTX' in config.root.targets:
config.unsupported = True

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; RUN: opt < %s -nary-reassociate -early-cse -S | FileCheck %s
; RUN: opt < %s -passes='nary-reassociate' -S | opt -early-cse -S | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
target triple = "nvptx64-unknown-unknown"
declare void @foo(float*)
; foo(&a[i]);
; foo(&a[i + j]);
; =>
; t = &a[i];
; foo(t);
; foo(t + j);
define void @reassociate_gep(float* %a, i64 %i, i64 %j) {
; CHECK-LABEL: @reassociate_gep(
%1 = add i64 %i, %j
%2 = getelementptr float, float* %a, i64 %i
; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i64 %i
call void @foo(float* %2)
; CHECK: call void @foo(float* [[t1]])
%3 = getelementptr float, float* %a, i64 %1
; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 %j
call void @foo(float* %3)
; CHECK: call void @foo(float* [[t2]])
ret void
}
; foo(&a[sext(j)]);
; foo(&a[sext(i +nsw j)]);
; foo(&a[sext((i +nsw j) +nsw i)]);
; =>
; t1 = &a[sext(j)];
; foo(t1);
; t2 = t1 + sext(i);
; foo(t2);
; t3 = t2 + sext(i); // sext(i) should be GVN'ed.
; foo(t3);
define void @reassociate_gep_nsw(float* %a, i32 %i, i32 %j) {
; CHECK-LABEL: @reassociate_gep_nsw(
%idxprom.j = sext i32 %j to i64
%1 = getelementptr float, float* %a, i64 %idxprom.j
; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i64 %idxprom.j
call void @foo(float* %1)
; CHECK: call void @foo(float* [[t1]])
%2 = add nsw i32 %i, %j
%idxprom.2 = sext i32 %2 to i64
%3 = getelementptr float, float* %a, i64 %idxprom.2
; CHECK: [[sexti:[^ ]+]] = sext i32 %i to i64
; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 [[sexti]]
call void @foo(float* %3)
; CHECK: call void @foo(float* [[t2]])
%4 = add nsw i32 %2, %i
%idxprom.4 = sext i32 %4 to i64
%5 = getelementptr float, float* %a, i64 %idxprom.4
; CHECK: [[t3:[^ ]+]] = getelementptr float, float* [[t2]], i64 [[sexti]]
call void @foo(float* %5)
; CHECK: call void @foo(float* [[t3]])
ret void
}
; assume(j >= 0);
; foo(&a[zext(j)]);
; assume(i + j >= 0);
; foo(&a[zext(i + j)]);
; =>
; t1 = &a[zext(j)];
; foo(t1);
; t2 = t1 + sext(i);
; foo(t2);
define void @reassociate_gep_assume(float* %a, i32 %i, i32 %j) {
; CHECK-LABEL: @reassociate_gep_assume(
; assume(j >= 0)
%cmp = icmp sgt i32 %j, -1
call void @llvm.assume(i1 %cmp)
%1 = add i32 %i, %j
%cmp2 = icmp sgt i32 %1, -1
call void @llvm.assume(i1 %cmp2)
%idxprom.j = zext i32 %j to i64
%2 = getelementptr float, float* %a, i64 %idxprom.j
; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i64 %idxprom.j
call void @foo(float* %2)
; CHECK: call void @foo(float* [[t1]])
%idxprom.1 = zext i32 %1 to i64
%3 = getelementptr float, float* %a, i64 %idxprom.1
; CHECK: [[sexti:[^ ]+]] = sext i32 %i to i64
; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 [[sexti]]
call void @foo(float* %3)
; CHECK: call void @foo(float* [[t2]])
ret void
}
; Do not split the second GEP because sext(i + j) != sext(i) + sext(j).
define void @reassociate_gep_no_nsw(float* %a, i32 %i, i32 %j) {
; CHECK-LABEL: @reassociate_gep_no_nsw(
%1 = add i32 %i, %j
%2 = getelementptr float, float* %a, i32 %j
; CHECK: getelementptr float, float* %a, i32 %j
call void @foo(float* %2)
%3 = getelementptr float, float* %a, i32 %1
; CHECK: getelementptr float, float* %a, i32 %1
call void @foo(float* %3)
ret void
}
define void @reassociate_gep_128(float* %a, i128 %i, i128 %j) {
; CHECK-LABEL: @reassociate_gep_128(
%1 = add i128 %i, %j
%2 = getelementptr float, float* %a, i128 %i
; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i128 %i
call void @foo(float* %2)
; CHECK: call void @foo(float* [[t1]])
%3 = getelementptr float, float* %a, i128 %1
; CHECK: [[truncj:[^ ]+]] = trunc i128 %j to i64
; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 [[truncj]]
call void @foo(float* %3)
; CHECK: call void @foo(float* [[t2]])
ret void
}
%struct.complex = type { float, float }
declare void @bar(%struct.complex*)
define void @different_types(%struct.complex* %input, i64 %i) {
; CHECK-LABEL: @different_types(
%t1 = getelementptr %struct.complex, %struct.complex* %input, i64 %i
call void @bar(%struct.complex* %t1)
%j = add i64 %i, 5
%t2 = getelementptr %struct.complex, %struct.complex* %input, i64 %j, i32 0
; CHECK: [[cast:[^ ]+]] = bitcast %struct.complex* %t1 to float*
; CHECK-NEXT: %t2 = getelementptr float, float* [[cast]], i64 10
; CHECK-NEXT: call void @foo(float* %t2)
call void @foo(float* %t2)
ret void
}
declare void @llvm.assume(i1)

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; RUN: opt < %s -slsr -nary-reassociate -S | FileCheck %s
; RUN: opt < %s -slsr -S | opt -passes='nary-reassociate' -S | FileCheck %s
; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s --check-prefix=PTX
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
; foo((a + b) + c);
; foo((a + b * 2) + c);
; foo((a + b * 3) + c);
; =>
; abc = (a + b) + c;
; foo(abc);
; ab2c = abc + b;
; foo(ab2c);
; ab3c = ab2c + b;
; foo(ab3c);
define void @nary_reassociate_after_slsr(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @nary_reassociate_after_slsr(
; PTX-LABEL: .visible .func nary_reassociate_after_slsr(
; PTX: ld.param.u32 [[b:%r[0-9]+]], [nary_reassociate_after_slsr_param_1];
%ab = add i32 %a, %b
%abc = add i32 %ab, %c
call void @foo(i32 %abc)
; CHECK: call void @foo(i32 %abc)
; PTX: st.param.b32 [param0+0], [[abc:%r[0-9]+]];
%b2 = shl i32 %b, 1
%ab2 = add i32 %a, %b2
%ab2c = add i32 %ab2, %c
; CHECK-NEXT: %ab2c = add i32 %abc, %b
; PTX: add.s32 [[ab2c:%r[0-9]+]], [[abc]], [[b]]
call void @foo(i32 %ab2c)
; CHECK-NEXT: call void @foo(i32 %ab2c)
; PTX: st.param.b32 [param0+0], [[ab2c]];
%b3 = mul i32 %b, 3
%ab3 = add i32 %a, %b3
%ab3c = add i32 %ab3, %c
; CHECK-NEXT: %ab3c = add i32 %ab2c, %b
; PTX: add.s32 [[ab3c:%r[0-9]+]], [[ab2c]], [[b]]
call void @foo(i32 %ab3c)
; CHECK-NEXT: call void @foo(i32 %ab3c)
; PTX: st.param.b32 [param0+0], [[ab3c]];
ret void
}
declare void @foo(i32)

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; RUN: opt < %s -nary-reassociate -S | FileCheck %s
; RUN: opt < %s -passes='nary-reassociate' -S | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
declare void @foo(i32)
; foo(a + c);
; foo((a + (b + c));
; =>
; t = a + c;
; foo(t);
; foo(t + b);
define void @left_reassociate(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @left_reassociate(
%1 = add i32 %a, %c
; CHECK: [[BASE:%[a-zA-Z0-9]+]] = add i32 %a, %c
call void @foo(i32 %1)
%2 = add i32 %b, %c
%3 = add i32 %a, %2
; CHECK: [[RESULT:%[a-zA-Z0-9]+]] = add i32 [[BASE]], %b
call void @foo(i32 %3)
; CHECK-NEXT: call void @foo(i32 [[RESULT]])
ret void
}
; foo(a + c);
; foo((a + b) + c);
; =>
; t = a + c;
; foo(t);
; foo(t + b);
define void @right_reassociate(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @right_reassociate(
%1 = add i32 %a, %c
; CHECK: [[BASE:%[a-zA-Z0-9]+]] = add i32 %a, %c
call void @foo(i32 %1)
%2 = add i32 %a, %b
%3 = add i32 %2, %c
; CHECK: [[RESULT:%[a-zA-Z0-9]+]] = add i32 [[BASE]], %b
call void @foo(i32 %3)
; CHECK-NEXT: call void @foo(i32 [[RESULT]])
ret void
}
; t1 = a + c;
; foo(t1);
; t2 = a + b;
; foo(t2);
; t3 = t2 + c;
; foo(t3);
;
; Do not rewrite t3 into t1 + b because t2 is used elsewhere and is likely free.
define void @no_reassociate(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @no_reassociate(
%1 = add i32 %a, %c
; CHECK: add i32 %a, %c
call void @foo(i32 %1)
%2 = add i32 %a, %b
; CHECK: add i32 %a, %b
call void @foo(i32 %2)
%3 = add i32 %2, %c
; CHECK: add i32 %2, %c
call void @foo(i32 %3)
ret void
}
; if (p1)
; foo(a + c);
; if (p2)
; foo(a + c);
; if (p3)
; foo((a + b) + c);
;
; No action because (a + c) does not dominate ((a + b) + c).
define void @conditional(i1 %p1, i1 %p2, i1 %p3, i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @conditional(
entry:
br i1 %p1, label %then1, label %branch1
then1:
%0 = add i32 %a, %c
; CHECK: add i32 %a, %c
call void @foo(i32 %0)
br label %branch1
branch1:
br i1 %p2, label %then2, label %branch2
then2:
%1 = add i32 %a, %c
; CHECK: add i32 %a, %c
call void @foo(i32 %1)
br label %branch2
branch2:
br i1 %p3, label %then3, label %return
then3:
%2 = add i32 %a, %b
; CHECK: %2 = add i32 %a, %b
%3 = add i32 %2, %c
; CHECK: add i32 %2, %c
call void @foo(i32 %3)
br label %return
return:
ret void
}
; This test involves more conditional reassociation candidates. It exercises
; the stack optimization in tryReassociatedAdd that pops the candidates that
; do not dominate the current instruction.
;
; def1
; cond1
; / \
; / \
; cond2 use2
; / \
; / \
; def2 def3
; cond3
; / \
; / \
; def4 use1
;
; NaryReassociate should match use1 with def3, and use2 with def1.
define void @conditional2(i32 %a, i32 %b, i32 %c, i1 %cond1, i1 %cond2, i1 %cond3) {
entry:
%def1 = add i32 %a, %b
br i1 %cond1, label %bb1, label %bb6
bb1:
br i1 %cond2, label %bb2, label %bb3
bb2:
%def2 = add i32 %a, %b
call void @foo(i32 %def2)
ret void
bb3:
%def3 = add i32 %a, %b
br i1 %cond3, label %bb4, label %bb5
bb4:
%def4 = add i32 %a, %b
call void @foo(i32 %def4)
ret void
bb5:
%0 = add i32 %a, %c
%1 = add i32 %0, %b
; CHECK: [[t1:%[0-9]+]] = add i32 %def3, %c
call void @foo(i32 %1) ; foo((a + c) + b);
; CHECK-NEXT: call void @foo(i32 [[t1]])
ret void
bb6:
%2 = add i32 %a, %c
%3 = add i32 %2, %b
; CHECK: [[t2:%[0-9]+]] = add i32 %def1, %c
call void @foo(i32 %3) ; foo((a + c) + b);
; CHECK-NEXT: call void @foo(i32 [[t2]])
ret void
}
; foo((a + b) + c)
; foo(((a + d) + b) + c)
; =>
; t = (a + b) + c;
; foo(t);
; foo(t + d);
define void @quaternary(i32 %a, i32 %b, i32 %c, i32 %d) {
; CHECK-LABEL: @quaternary(
%1 = add i32 %a, %b
%2 = add i32 %1, %c
call void @foo(i32 %2)
; CHECK: call void @foo(i32 [[TMP1:%[a-zA-Z0-9]]])
%3 = add i32 %a, %d
%4 = add i32 %3, %b
%5 = add i32 %4, %c
; CHECK: [[TMP2:%[a-zA-Z0-9]]] = add i32 [[TMP1]], %d
call void @foo(i32 %5)
; CHECK: call void @foo(i32 [[TMP2]]
ret void
}
define void @iterative(i32 %a, i32 %b, i32 %c) {
%ab = add i32 %a, %b
%abc = add i32 %ab, %c
call void @foo(i32 %abc)
%ab2 = add i32 %ab, %b
%ab2c = add i32 %ab2, %c
; CHECK: %ab2c = add i32 %abc, %b
call void @foo(i32 %ab2c)
; CHECK-NEXT: call void @foo(i32 %ab2c)
%ab3 = add i32 %ab2, %b
%ab3c = add i32 %ab3, %c
; CHECK-NEXT: %ab3c = add i32 %ab2c, %b
call void @foo(i32 %ab3c)
; CHECK-NEXT: call void @foo(i32 %ab3c)
ret void
}
define void @avoid_infinite_loop(i32 %a, i32 %b) {
; CHECK-LABEL: @avoid_infinite_loop
%ab = add i32 %a, %b
; CHECK-NEXT: %ab
%ab2 = add i32 %ab, %b
; CHECK-NEXT: %ab2
call void @foo(i32 %ab2)
; CHECK-NEXT: @foo(i32 %ab2)
ret void
}

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; RUN: opt < %s -nary-reassociate -S | FileCheck %s
; RUN: opt < %s -passes='nary-reassociate' -S | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
declare void @foo(i32)
; CHECK-LABEL: @bar(
define void @bar(i32 %a, i32 %b, i32 %c) {
%1 = mul i32 %a, %c
; CHECK: [[BASE:%[a-zA-Z0-9]+]] = mul i32 %a, %c
call void @foo(i32 %1)
%2 = mul i32 %a, %b
%3 = mul i32 %2, %c
; CHECK: [[RESULT:%[a-zA-Z0-9]+]] = mul i32 [[BASE]], %b
call void @foo(i32 %3)
; CHECK-NEXT: call void @foo(i32 [[RESULT]])
ret void
}

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; RUN: opt < %s -nary-reassociate -S | FileCheck %s
; RUN: opt < %s -passes='nary-reassociate' -S | FileCheck %s
define i32 @foo(i32 %tmp4) {
; CHECK-LABEL: @foo(
entry:
%tmp5 = add i32 %tmp4, 8
%tmp13 = add i32 %tmp4, -128 ; deleted
%tmp14 = add i32 %tmp13, 8 ; => %tmp5 + -128
%tmp21 = add i32 119, %tmp4
; do not rewrite %tmp23 against %tmp13 because %tmp13 is already deleted
%tmp23 = add i32 %tmp21, -128
; CHECK: %tmp23 = add i32 %tmp21, -128
ret i32 %tmp23
}